BGS mineralogy and petrology collection record

Sample number E20213; COLLNOAWW46;
Sample Donor Woodland,A.W.
Rock name 'Original entry: Clastic Or Pyroclastic Rock Replaced By Carbonate And Orange Chlorite'
Stratigraphy Not entered
Comments Good ore. A vein in this rock is composed of carbonate, mica and barytes. Near junction of cross measure drift in waste in Northern part of middle lead. believing it to be a lateral development of the ore bed.
Locality details Nant Manganese Mine (after dewatering July 1943) Nant-y-Gadwen, Llanyael Rhys.
50k map sheet Aberdaron and Bardsey Island (133)

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Map reference
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E20213

Cross Polarized, E20213

Plane Polarized, E20213

Plane Polarized, E20213